From 2003-2005, the average
water use for golf course irrigation
in the U.S. was estimated to be
2,312,701 acrefeet per year. That
equates to approximately 2.08
billion gallons of water per day for
golf course irrigation in the U.S.
I came here to also suggest birdwatching! You don't need to go very far, just sit out on the porch and listen/watch the birds go by. Then, start googling for the local bird types to see if you can start recognizing their species by the way they look or sound. Expand to local plants nearby or other animals you may notice.
It's free, easy, educational, and it gets you outside for a little bit which might help you get out of your depression cloud, even if it's just for a little while.